/*
 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package javax.swing.plaf.metal;

import sun.awt.AppContext;

import javax.swing.*;
import javax.swing.plaf.basic.BasicCheckBoxUI;

import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.*;
import java.io.Serializable;


/**
 * CheckboxUI implementation for MetalCheckboxUI
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases. The current serialization support is
 * appropriate for short term storage or RMI between applications running
 * the same version of Swing.  As of 1.4, support for long term storage
 * of all JavaBeans&trade;
 * has been added to the <code>java.beans</code> package.
 * Please see {@link java.beans.XMLEncoder}.
 *
 * @author Michael C. Albers
 */
public class MetalCheckBoxUI extends MetalRadioButtonUI {

  // NOTE: MetalCheckBoxUI inherts from MetalRadioButtonUI instead
  // of BasicCheckBoxUI because we want to pick up all the
  // painting changes made in MetalRadioButtonUI.

  private static final Object METAL_CHECK_BOX_UI_KEY = new Object();

  private final static String propertyPrefix = "CheckBox" + ".";

  private boolean defaults_initialized = false;

  // ********************************
  //         Create PlAF
  // ********************************
  public static ComponentUI createUI(JComponent b) {
    AppContext appContext = AppContext.getAppContext();
    MetalCheckBoxUI checkboxUI =
        (MetalCheckBoxUI) appContext.get(METAL_CHECK_BOX_UI_KEY);
    if (checkboxUI == null) {
      checkboxUI = new MetalCheckBoxUI();
      appContext.put(METAL_CHECK_BOX_UI_KEY, checkboxUI);
    }
    return checkboxUI;
  }

  public String getPropertyPrefix() {
    return propertyPrefix;
  }

  // ********************************
  //          Defaults
  // ********************************
  public void installDefaults(AbstractButton b) {
    super.installDefaults(b);
    if (!defaults_initialized) {
      icon = UIManager.getIcon(getPropertyPrefix() + "icon");
      defaults_initialized = true;
    }
  }

  protected void uninstallDefaults(AbstractButton b) {
    super.uninstallDefaults(b);
    defaults_initialized = false;
  }

}
